gitlab: fix s390x tag for avocado-system-centos

The 390x tag should be s390x.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Message-ID: <20240107170119.82222-2-npiggin@gmail.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
1 file changed